Marks Daily Apple
Serving up health and fitness insights (daily, of course) with a side of irreverence.

Archive for the ‘ Research Analysis ’ Category

12 Jul

How Much Meat Is Too Much?

I’ve discussed—and countered—many misconceptions people hold to be true about the Primal lifestyle. That we wear loin cloths and shun modern medicine (I only do one of those), eat so low-carb all the time that running our urine through a coffee filter produces valuable ketone esters (stay tuned for the supplement!), and avoid cardio to the point […]

23 Jun

From Float Tanks to Silent Retreats: Why Are People Looking for More Extreme Forms of Sensory Deprivation?

I’m thinking about a Philip K. Dick story, never published, perhaps never put down on paper or even imagined. In this story, which might only exist in my mind, the world is awash in sensory stimuli. Bright lights, flashing signs, an endless cacophony. A world of quick jump cuts. It’s like the Khaosan Road at 11 […]

22 Jun

Are Cell Phones and EMFs Really Harming Your Health?

I’ve covered GMOs (twice), organic food, and pesticides. Today, I’m tackling another hot button issue: the dangers (or lack thereof) of modern electronics, specifically mobile devices and the effects of electromagnetic fields (EMFs). Obviously, the way we use electronics has impacted our lives in both positive and negative ways. Positives include greater dissemination of knowledge, democratization of communication, economic […]

31 May

The Health Paradox Paradox

A paradox is an observation that contradicts a previously-held assumption about reality. But assuming the observation is true, a paradox isn’t really a paradox. It’s not the new observation that’s wrong or faulty or misinterpreted; it’s the assumption that contradicts reality and needs reworking. The history of science is littered with paradoxes that dissolved when previously […]

6 Apr

15 Reasons Not to Trust That Latest Nutritional Study

Nutritional studies are often the best we’ve got. Without them, we’d be plucking anecdotes from a swirling vortex of hearsay, old wives’ tales, and prejudices. Some actionable information would definitely emerge, but we wouldn’t have the broader vision and clarity of thinking offered by the scientific method. Most of them are deeply flawed, though. And to […]

23 Mar

Should You Sleep-Low to Boost Performance?

Thought experiment time. Say you train hard, hard enough to deplete a signifiant amount of glycogen. Your muscles are empty, sensitive to the effects of insulin, and screaming for a couple potatoes to refill glycogen. What do you do? In most circles, the answer is to eat those potatoes and refill those glycogen stores. And why […]

14 Mar

Dear Mark: Red Blood Cell Fatty Acid Content and Obese Paleo Figurines

For today’s edition of Dear Mark, I’m answering a pair questions that, well, question some of the fundamental principles of Primal living and eating. First up concerns a study seeming to show that linoleic acid (from seed oils) is a healthier, less inflammatory choice than olive oil or fish oil. Could it be true? Find out […]

7 Jul

Is the Paleo Diet Supported by Scientific Research? – Part 2

Last week, I countered claims that “paleo gots no science” with summaries of five recent (and not so recent) papers supporting the paleo/Primal approach to diet. The reception to that post was strong enough that I got requests to cover a few more this week. So today, I’m going to explain the findings of five more relevant […]

1 Jul

Is the Paleo Diet Supported by Scientific Research?

People constantly demand proof for the efficacy of the Primal eating plan. And I’m glad they do. The Primal Blueprint makes sense on an intuitive level, and those success stories we see every Friday sure are persuasive, but it’s also important to see broader support in the scientific literature. Many times, people demand proof without really […]

30 Mar

Dear Mark: A New Whole Grain Study, Advice for a Teen, Broken Leg Sprints, and The 3 Mules

For today’s edition of Dear Mark, we’ve got four questions and four answers. First up, there’s a new whole grain study, and some people are claiming it demonstrates that low-carb diets will lead to early mortality. Does it do anything of the sort, or is this yet another flawed observational paper? Next, a teen on […]

23 Sep

Artificial Sweeteners May Leave You Absolutely Gutted

Several years ago, I covered the popular artificial sweeteners sucralose, acesulfame-k, aspartame, and saccharin, finding mixed results and little to confirm the widely-held view that they provoke an insulin response. I also wrote about diet soda in general, coming out generally against them while acknowledging the lack of hard evidence either way. But artificial sweeteners […]

28 Apr

Dear Mark: Leg Fatigue, Too Much Muscle Meat, Starch Persorption, and Hadza Study Author Responds

For today’s edition of Dear Mark, we’ve got four questions. First is a question from a reader who exemplifies the “between a rock and a hard place” situation inherent to chronic cardio. Second, I address a reader who worries that I’m not worried enough about exclusive muscle meat consumption. Third, I give my thoughts on whether […]

10 Apr

Does Red Meat Clog Your Arteries After All?

I’ve been asked to comment on the latest media deluge to suggest that red meat is again the primary cause of atherosclerosis, heart disease, and your impending doom. At least this time they’re targeting something other than cholesterol: this time it’s carnitine. Carnitine is found in red meat, mostly, as well as dairy, tempeh, and […]

14 Mar

How Simplifying Your Life Can Help You Refocus on What’s Important

Earlier this week I ran across a study that demonstrated a “simple lifestyle” can decrease our contact with toxic endocrine disrupting chemicals. The researchers looked at lifestyle elements like transportation, personal care products, and homegrown versus purchased food in their participants. I was struck by the study’s suggestion itself but also by the larger metaphoric […]

11 Mar

Dear Mark: Is Meat Going to Kill Me (Again)?

There’s another “meat is bad” study making the rounds, featuring such stellar prose as: “Although causality cannot be established…” “…further research is recommended.” “…should still strive to reduce intake of red and processed meat, which tend to contain high amounts of saturated fat and sodium.” And so on. By now, we see these lines, roll […]

3 Jan

A Different Kind of Fitness Resolution

It’s the month when gym memberships spike and fitness equipment flies off store shelves. I think most of us begin the year wanting to be healthier, and fitness stands as an essential element of that endeavor. Logical. Reasonable. Commendable. Yet, the common interpretation of what it will take to get there suddenly veers off in […]

4 Dec

Should We Ice Injuries?

I’ve said this before, but inflammation is a necessary response to injury. It’s the inflammatory response that increases blood and lymphatic flow to and from the injured tissues, bringing healing nutrients and inflammatory mediators and removing damaged refuse. It’s the inflammatory response that makes injuries hurt, which prevents us from using and re-injuring the injured area. […]

9 Oct

Is Organic a Scam? – Nutrient Differences

Even if you can get folks to begrudgingly admit that organic foods tends to contain fewer pesticide residues than conventional (and that this might even impact a person’s health or the way a child develops), they’ll dig in their heels when it comes to the nutritional content. And why shouldn’t they? Organic isn’t really about […]

3 Oct

Is Organic a Scam? – Fetal and Child Development and Antibiotic Resistance

A few weeks ago in Weekend Link Love, I mentioned the great big much-ballyhooed study that appeared to show organic produce was no more healthy than conventional produce. Many people with an axe to grind championed its findings, with some proclaiming the undeniable ringing of the final death knell of organic farming. Science Based Medicine […]

30 Aug

The Straight Dope on Cholesterol: 10 Things You Need to Know – Part 2

This is a guest post by Peter Attia and is a summary based on a 10-part series of the same name that you can find at The Eating Academy. To read The Straight Dope on Cholesterol: 10 Things You Need to Know – Part 1 click here. To start at the beginning of Peter’s 10-part […]

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